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If worm helix angle is 30⁰, then worm should have at least ___ threads.

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If worm helix angle is 30⁰, then worm should have at least ___ threads.

(a) 5

(b) 6

(c) 7

(d) 8

I am struggling with this question from during my preparation.

I am studying the Worm Gears in Bevel Gears, Worm Gears and FlyWheel of Machine Design

1 Answer

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by (52.6k points)
Right option is (a) 5

Dive into clarity with: The permissible helix angle is 6⁰ and hence there should be at least five threads i.e. 30/6.

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